linux-kernel - [patch 41/46] genirq/manage: Rework disable_percpu

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Message-ID: <20250313155916.660125402@linutronix.de>
Date: Thu, 13 Mar 2025 17:00:53 +0100 (CET)
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Peter Zijlstra <peterz@...radead.org>,
 Jiri Slaby <jirislaby@...nel.org>
Subject: [patch 41/46] genirq/manage: Rework disable_percpu_irq()

Use the new guards to get and lock the interrupt descriptor and tidy up the
code.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 kernel/irq/manage.c |   11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -2329,15 +2329,8 @@ EXPORT_SYMBOL_GPL(irq_percpu_is_enabled)
 
 void disable_percpu_irq(unsigned int irq)
 {
-	unsigned int cpu = smp_processor_id();
-	unsigned long flags;
-	struct irq_desc *desc = irq_get_desc_lock(irq, &flags, IRQ_GET_DESC_CHECK_PERCPU);
-
-	if (!desc)
-		return;
-
-	irq_percpu_disable(desc, cpu);
-	irq_put_desc_unlock(desc, flags);
+	scoped_irqdesc_get_and_lock(irq, IRQ_GET_DESC_CHECK_PERCPU)
+		irq_percpu_disable(scoped_irqdesc, smp_processor_id());
 }
 EXPORT_SYMBOL_GPL(disable_percpu_irq);